[ BUILT WITH HIGH-QUALITY MATERIALS ] - The filter is made with high-quality materials that are built to last. It is constructed with a combination of natural and synthetic fibers that are tightly woven together, providing a strong and durable barrier that captures particles and pollutants. Carbon filters are known for their ability to remove odors and volatile organic compounds (VOCs) from the air, making them ideal for use in homes or offices with pets, smoking, or strong cooking smells | | [ CLEAN FRESH AIR WITH ADVANCED DESIGN ] - Our carbon filter is designed to capture a wide range of particles and pollutants, including dust, pet dander, and pollen. The filter's advanced design ensures that even the smallest particles are captured, providing you with clean, fresh air in your home or office | | [ COMPATIBLE WITH BLUEAIR 211 ] - Compatible with Blueair Filter # Blue Pure 211+ Air Purifier Foldable. To ensure optimal performance, it is recommended that the filter be replaced.